package demo.demo07.test03;

//生产者消费者：信号灯法，标志位解决
public class TestPC2 {
    public static void main(String[] args) {
        TV tv = new TV();
        new Player(tv).start();
        new Watcher(tv).start();
    }
}

//生产者-演员
class Player extends Thread {
    TV tv;

    public Player(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {

        for (int i = 0; i < 20; i++) {
            if (i % 2 == 0) {
                this.tv.play("播放1");
            } else {
                this.tv.play("播放2");
            }
        }
    }
}

//消费者观众

class Watcher extends Thread {
    TV tv;

    public Watcher(TV tv) {
        this.tv = tv;
    }

    @Override
    public void run() {
        for (int i = 0; i < 20; i++) {
            tv.watch();
        }
    }
}


//产品  tv
class TV {
    //演员表演观众等待
    //观众观看，演员等待


    String voice;
    boolean flag = true;


    //表演
    public synchronized void play(String voice) {
        if (!flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("开始：" + voice);
        this.notifyAll();
        this.voice = voice;
        this.flag = !this.flag;
    }

    public synchronized void watch() {
        if (flag) {
            try {
                this.wait();
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        }
        System.out.println("观看了" + voice);
        this.notifyAll();

        this.flag = !this.flag;
    }
}